Listen to Rihanna on iHeartRadio | Listen to Justin Bieber on iHeartRadio

Justin Bieber may be the King of Twitter, but Rihanna is now the Queen of Youtube.  According to Billboard, she has passed the tween heartthrob to become the site's most-watched artist. 

Rihanna has 77 videos posted on her official VEVO channel, which have now racked up a combined 3.7 billion views.  Rihanna also has outdone the Biebs when it comes to Youtube subscribers.  She has accumulated 8.7 million subscribers on the platform, compared to Bieber's 4.9 million.  Billboard notes as well that Rihanna is beating Bieber on Facebook too, with 72 million likes compared to his 54 million. 

Others artists who can boast impressive Youtube view counts include South Korean rapper Psy, whose "Gangnam Style" has more than a billion views alone, Eminem and Lady Gaga. 

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